Project: Reusing existing wells for CO2 storage operations

Acronym REX-CO2 (Reference Number: 299681)
Duration 01/09/2019 - 31/08/2022
Project Topic REX-CO2 will increase the technical feasibility and economic competitiveness of high-potential depleted hydrocarbon fields earmarked for CO2 storage. The specific objectives are: - Develop a publicly available well reuse screening tool which helps stakeholders to make informed decisions on the CCS reuse potential of certain wells or fields - Demonstrate the application of the developed tool to perform dedicated reuse assessment, including technical, ecological and economic aspects with candidate wells/fields from multiple international sites - Perform laboratory testing on relevant reuse risk scenarios, provide recommendations for (smart) material selection in reused wells; feed coupled thermo-hydraulic-mechanical-chemical (THMC) models and improve failure predictions - Provide guidance for the development of reuse permit applications - Gain an improved understanding on public acceptance and provide guidance on the socio-economic aspects of re-using oil and gas infrastructures
Project Results
(after finalisation)
The results of REX-CO2 are expected to facilitate large-scale CCUS implementation by providing a tool to evaluate and rank the CO2 reuse potential of hydrocarbon fields. The developed technology is not limited to a particular sector of CO2 storage but will accelerate all types of CCS. Key results will include: - Synthesised findings from developing a public reuse well screening tool for reusing existing hydrocarbon fields - Key findings in laboratory experiments , including well cement state of stress, material self-healing potential and implications for integrity of reused wells - Field scale numerical simulation results for different reuse field scenarios - Field case reuse studies for selected wells and depleted fields in all six partner countries - Assessment of public acceptance and recommendations for future projects involving well re-use for CO2 injection/storage - Development of technical and socioeconomic best practice recommendations for reusing existing wells for CO2 storage
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Project partner

Number Name Role Country
1 TNO Coordinator Netherlands
2 SINTEF Industry Partner Norway
3 RESTONE AS Partner Norway
4 IFP-EN Partner France
5 IKON Science Partner United Kingdom
6 GeoEcoMar Partner Romania
7 CO2Club Partner Romania
8 Los Alamos National Labotar Partner United States of America
9 British Geological Survey Partner United Kingdom
10 Chevron Partner United States of America
11 National Agency of Mineral Resources (NAMR) Partner Romania
12 BP Partner United Kingdom
13 Oil & Gas Authority Partner United Kingdom
14 EQUINOR ASA Partner Norway
15 EBN Partner Netherlands
16 IRO Partner Netherlands